Zirgo 10435 Fixed 180°F Thermo Temperature Control Switch Sensor

The Zirgo 10435 (ZIRZFSWF) Temperature Control Switch-Sensor is a fixed-temperature thermal switch designed to automatically activate your electric cooling fan when engine coolant reaches 180°F. The brass-bodied sensor threads directly into the engine block or water neck, providing a reliable and accurate trigger signal for your cooling fan relay.

Key Features:

• Fixed activation temperature: Turns fan on at 180°F
• Analog input sensor for simple, reliable operation
• 3/8"-18 dryseal (NPT) thread mount — threads directly into engine block or water neck
• 1/4" blade terminal for easy wiring connection
• Brass body construction for durability and corrosion resistance
• ±4° accuracy for consistent fan activation
• Measures fluid temperature only
• Non-adjustable fixed-temperature design
• No plug-and-play harness included — sold as sending unit only
• Limited Lifetime Warranty

OEM Cross-References: Replaces 993146, 8993164, 25036135, 8992508, Valley Forge TS-78, General 2647, General TS-76.

For a complete installation, pair this switch-sensor with a compatible relay and wiring harness. Zirgo recommends using the appropriate relay to ensure proper fan operation and to protect the switch from excess current draw.